Portable telephone



FIG. 1 is a perspective view of a portable telephone, according to our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a rear view thereof when a slidable part has been operated. 

We claim the ornamental design for a portable telephone, as shown and described. 